JPS6146227Y2 - - Google Patents
Info
- Publication number
- JPS6146227Y2 JPS6146227Y2 JP10507681U JP10507681U JPS6146227Y2 JP S6146227 Y2 JPS6146227 Y2 JP S6146227Y2 JP 10507681 U JP10507681 U JP 10507681U JP 10507681 U JP10507681 U JP 10507681U JP S6146227 Y2 JPS6146227 Y2 JP S6146227Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- cylinders
- cylinder
- suction
- ratchet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010008 shearing Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Reciprocating Pumps (AREA)
Description
【考案の詳細な説明】
コンクリートポンプのシリンダ側口金の摩耗損
傷の改良にかかるコンクリートポンプにおける吸
送切換装置に関する。第１図は、従来のコンクリ
ートポンプにおける吸送部の側面図を、第２図
は、第１図の−線矢視断面図を示す。[Detailed Description of the Invention] The present invention relates to a suction switching device for a concrete pump, which improves wear and tear on the cylinder side cap of the concrete pump. FIG. 1 is a side view of a suction section in a conventional concrete pump, and FIG. 2 is a cross-sectional view taken along the line - in FIG. 1.
生コンクリートを吸入、吐出するシリンダ１，
１′を並列に配置し、図示省略のピストンにより
吸入、圧送を繰りかえし、ホツパ２内の生コンク
リートを揺動管３を経て、移送管４内へと圧送さ
せるようにした圧送装置である。 Cylinder 1 that sucks in and discharges fresh concrete,
1' are arranged in parallel, and the fresh concrete in the hopper 2 is forced to be fed into the transfer pipe 4 through the swinging pipe 3 by repeating suction and pressure feeding by a piston (not shown).
上記シリンダ１，１′は、ホツパ２側面低部で
ホツパ２と連通しており、シリンダ１，１′と移
送管４との間は、揺動管３で結ばれている。揺動
管３は、上記シリンダ１，１′の吸入、吐出に連
動して、ホツパ２の側面を滑動してシリンダ１，
１′口部の口金５，５′を介してシリンダ１，１′
に連通して連続的に生コンクリートを圧送する。 The cylinders 1 and 1' are in communication with the hopper 2 at the lower side of the hopper 2, and the cylinders 1 and 1' and the transfer pipe 4 are connected by a swing pipe 3. The swing tube 3 slides on the side surface of the hopper 2 in conjunction with the suction and discharge of the cylinders 1 and 1'.
The cylinders 1 and 1' are connected through the caps 5 and 5' of the 1' mouth part.
The fresh concrete is continuously pumped through the pipe.
揺動管３の揺動は、揺動管３に固定されたアー
ム６に油圧シリンダ７，７′により、油圧力をか
けて行なわれる。 Swinging of the swinging tube 3 is performed by applying hydraulic pressure to the arm 6 fixed to the swinging tube 3 by hydraulic cylinders 7, 7'.
上記の吸入、圧送切換装置において、一対のコ
ンクリートシリンダ１，１′口部の口金５，５′と
揺動管３の揺動端の口金８とは、生コンクリート
雰囲気の中で摺接するようになつている。生コン
クリートにより、両口金５，５′，８ともに摩耗
する。とくに第３図に示すように生コンクリート
中の石材が、両口金５，５′，８にはさまれ、同
口金５，５′，８によつて剪断されるため、第４
図に示す如くシリンダ１，１′側口金５，５′のａ
部が他に比べてはげしく摩耗する。第４図は第３
図におけるシリンダ１，１′側口金５，５′の、
−線矢視断面の摩耗プロフイルを示すが、シリ
ンダ１，１′側口金５，５′のａ部が他部に比べて
摩耗が大きいために、シリンダ１，１′側口金
５，５′のすきまＣ部を通つて生コンクリートが
系路外へ流出し、コンクリートポンプの性能が低
下し、口金５，５′の交換頻度が高いという欠点
を有している。 In the above-mentioned suction/pressure feeding switching device, the caps 5, 5' at the mouths of the pair of concrete cylinders 1, 1' and the cap 8 at the swing end of the swing tube 3 are in sliding contact in the fresh concrete atmosphere. It's summery. Both caps 5, 5', and 8 are worn out by the fresh concrete. In particular, as shown in FIG.
As shown in the figure, a of the cylinder 1, 1' side caps 5, 5'
Some parts wear out more than others. Figure 4 is the third
The cylinder 1, 1' side caps 5, 5' in the figure,
- The wear profile of the cross section in the direction of the line arrow is shown, but since the part a of the cylinder 1, 1' side caps 5, 5' has greater wear compared to other parts, the wear profile of the cylinder 1, 1' side caps 5, 5' This method has disadvantages in that fresh concrete flows out of the system through the gap C, the performance of the concrete pump decreases, and the mouthpieces 5 and 5' must be replaced frequently.
そこで本考案は前記欠点を除去し、口金間の石
材剪断にともなう大きな局所摩耗を防止して口金
の交換頻度を少なくできるコンクリートポンプに
おける吸送切換装置を提供することを目的とした
ものである。 Therefore, the object of the present invention is to provide a suction switching device for a concrete pump that eliminates the above-mentioned drawbacks, prevents large local wear caused by stone shearing between the nozzles, and reduces the frequency of replacing the nozzles.
本考案の特徴とする処は、交互に作動する２本
のシリンダを並設し、同シリンダの吸入・吐出口
部に装着された口金を介して揺動管を切換機構に
より吐出行程のシリンダ口部側へ交互に切換える
コンクリートポンプにおいて、上記２本の各シリ
ンダ口部に回転可能に装着された外円周部にラチ
エツトを設けた口金と、該口金に当接し、上記揺
動管に固定の回転レバーにばねを介して伸縮自在
に装着したピンとを具備し、口金のラチエツトに
当接したピンにより揺動管の切換操作に連動し一
方向に所要ピツチだけ上記口金を回転させること
により、石材剪断にともなう摩耗を全周に分散さ
せ、局所摩耗を防止する。またシリンダ側口金の
回転は、他からの動力によらず、揺動管の揺動運
動をシリンダ側口金の外周部に設けたラチエツト
を利用して行わしめるので、特別な動力手段を必
要としない。 The feature of this invention is that two cylinders that operate alternately are arranged side by side, and a switching mechanism is used to switch the swing tube through the mouthpiece attached to the suction and discharge ports of the cylinders. In a concrete pump that alternately switches to the front side, there is a cap that is rotatably attached to each of the two cylinder mouths and has a ratchet on the outer circumference, and a cap that is in contact with the cap and is fixed to the swing pipe. The rotary lever is equipped with a pin that is telescopically attached via a spring, and the pin in contact with the ratchet of the cap rotates the cap in one direction by the required pitch in conjunction with the switching operation of the swing tube. Distributes the wear caused by shearing over the entire circumference, preventing local wear. In addition, the rotation of the cylinder side cap is not dependent on power from any other source, and the swinging motion of the swing tube is achieved using a ratchet provided on the outer periphery of the cylinder side cap, so no special power means is required. .
本考案の実施例を以下図面に従つて詳細に説明
する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
第５図は、本考案にかかるコンクリートポンプ
における吸送切換装置の一実施例を示す要部側断
面図であり、シリンダ１，１′はホツパ２の側面
に固着されており、同シリンダ１，１′の口部に
各々口金５，５′が回転可能に挿入されている。
第６図は、第５図の−線矢視図であり、口金
５，５′の外周にはラチエツト９が複数個加工さ
れている。一方、揺動管３の揺動端には口金８が
装着されている。また揺動管３の外周面上部に
は、シリンダ１，１′側の口金５，５′を回転させ
る回転レバー１０が固定されている。同回転レバ
ー１０の先端には、スプリング１１を介してピン
１２が伸縮自在に装着されており、シリンダ１，
１′側の口金５，５′のラチエツト９に当接し接触
する構造になつている。 FIG. 5 is a side cross-sectional view of the main part showing one embodiment of the suction switching device in the concrete pump according to the present invention, in which the cylinders 1 and 1' are fixed to the side surface of the hopper 2; A cap 5, 5' is rotatably inserted into the opening of the cap 1'.
FIG. 6 is a view taken along the - line in FIG. 5, and a plurality of ratchets 9 are machined on the outer periphery of the caps 5, 5'. On the other hand, a cap 8 is attached to the swinging end of the swinging tube 3. Further, a rotating lever 10 for rotating the mouthpieces 5, 5' on the cylinder 1, 1' side is fixed to the upper part of the outer peripheral surface of the swing tube 3. A pin 12 is telescopically attached to the tip of the rotary lever 10 via a spring 11, and the cylinder 1,
The structure is such that it comes into contact with the ratchet 9 of the caps 5, 5' on the 1' side.
なお、揺動管３とその口金８の接合部にはコン
クリートの漏れを防ぐシールリング１３が装着さ
れている。 A seal ring 13 is attached to the joint between the swing tube 3 and its base 8 to prevent leakage of concrete.
次にその作用効果を説明すると、揺動管３の揺
動にともない、回転レバー１０も揺動運動を行な
う。このとき、回転レバー１０先端のピン１２は
シリンダ１，１′側の口金５，５′の外周に設けら
れたラチエツト９の端面にあたり、口金５，５′
を所要ピツチだけ回転せしめる。このようにし
て、揺動管３の揺動によつて２個のシリンダ１，
１′の口金５，５′は互いに逆向きに少しづつ回転
する。シリンダ１，１′側口金５，５′と、揺動管
３側口金８間の石材の剪断により、第４図で示す
大きな摩耗をうけるシリンダ１，１′側口金５，
５′のａ部は、同口金５，５′の回転により、局所
に集中せず、全周に分散される。このためシリン
ダ１，１′側の口金５，５′の揺動面は、全周ほぼ
一様に摩耗し、局所的にコンクリートが系略外に
流出するすきまＣがなくなる。（第４図参照）こ
のためにシリンダ１，１′側口金５，５′の摩耗寿
命が長くなり、同口金５，５′の交換頻度も少な
く経済的である。 Next, the function and effect will be explained. As the swing tube 3 swings, the rotary lever 10 also swings. At this time, the pin 12 at the tip of the rotating lever 10 hits the end surface of the ratchet 9 provided on the outer periphery of the caps 5, 5' on the cylinder 1, 1' side.
Rotate by the required pitch. In this way, by swinging the swing tube 3, the two cylinders 1,
The caps 5, 5' of 1' rotate little by little in opposite directions. The cylinder 1, 1' side cap 5, which is subject to large wear as shown in FIG.
Due to the rotation of the caps 5, 5', the portion a of the cap 5' is not concentrated locally but is dispersed over the entire circumference. Therefore, the swinging surfaces of the caps 5, 5' on the cylinder 1, 1' side wear out almost uniformly all around the circumference, and there is no gap C through which concrete locally flows out of the system. (See FIG. 4) Therefore, the wear life of the cylinder 1, 1' side caps 5, 5' is extended, and the replacement frequency of the caps 5, 5' is also low, making it economical.
要するに本考案によれば、交互に作動する２本
のシリンダを並設し、同シリンダの吸入・吐出口
部に装着された口金を介して揺動管を切換機構に
より吐出行程のシリンダ口部側へ交互に切換える
コンクリートポンプにおいて、上記２本の各シリ
ンダ口部に回転可能に装着され外円周部にラチエ
ツトを設けた口金と、該口金に当接し、上記揺動
管に固定の回転レバーにばねを介して伸縮自在に
装着したピンを具備し、口金のラチエツトに当接
したピンにより揺動管の切換操作に連動し一方向
に所要ピツチだけ上記口金を特別な動力手段を必
要とせずに回転させるようにしたことにより、石
材の剪断による口金の摩耗は全周に分散し、口金
の局所摩耗は防止されるので、実用上有益なもの
である。 In short, according to the present invention, two cylinders that operate alternately are arranged side by side, and a switching mechanism is used to switch the swing tube to the cylinder mouth side in the discharge stroke through the mouthpiece attached to the suction and discharge ports of the cylinders. In a concrete pump that alternately switches between the two cylinders, the two cylinders are rotatably attached to the mouths and have a ratchet on the outer circumference, and a rotary lever that abuts the caps and is fixed to the swing tube. Equipped with a pin that is telescopically attached via a spring, and which is in contact with the ratchet of the cap, it is linked to the switching operation of the swing tube, and the cap can be moved by the required pitch in one direction without the need for special power means. By rotating, the wear of the cap due to shearing of the stone is dispersed over the entire circumference, and local wear of the cap is prevented, which is useful in practice.
第１図は従来のコンクリートポンプにおける吸
送部の側断面図、第２図は第１図−における
矢視断面図、第３図はその口金部の石材かみ込み
状況の説明図、第４図は第３図−における矢
視断面図、第５図は本考案にかかるコンクリート
ポンプにおける吸送切換装置の実施例を示す要部
側断面図、第６図は第５図−における概略矢
視図である。
１，１′……シリンダ、２……ホツパ、３……
揺動管、５，５′，１８……口金、９……ラチエ
ツト、１０……回転レバー、１１……スプリン
グ、１２……ピン、１３……シールリング。
Figure 1 is a side cross-sectional view of the suction section of a conventional concrete pump, Figure 2 is a cross-sectional view taken in the direction of the arrows in Figure 1-, Figure 3 is an explanatory diagram of the state of stone entrapment in the mouthpiece, and Figure 4. is a sectional view taken in the direction of the arrows in FIG. 3, FIG. 5 is a side sectional view of the main part showing an embodiment of the suction switching device in a concrete pump according to the present invention, and FIG. 6 is a schematic view taken in the direction of the arrows in FIG. It is. 1,1'...Cylinder, 2...Hopper, 3...
Swing tube, 5, 5', 18... base, 9... ratchet, 10... rotating lever, 11... spring, 12... pin, 13... seal ring.
Claims (1)
リンダの吸入・吐出口部に装着された口金を介し
て揺動管を切換機構により吐出行程のシリンダ口
部側へ交互に切換えるコンクリートポンプにおい
て、上記２本の各シリンダ口部に回転可能に装着
され外円周部にラチエツトを設けた口金と、該口
金に当接し、上記揺動管に固定の回転レバーにば
ねを介して伸縮自在に装着したピンとを具備し、
口金のラチエツトに当接したピンにより揺動管の
切換操作に連動し一方向に所要ピツチだけ上記口
金を回転させるようにしたことを特徴とするコン
クリートポンプにおける吸送切換装置。 In a concrete pump in which two cylinders that operate alternately are installed in parallel, and the swinging tube is alternately switched to the cylinder mouth side of the discharge stroke by a switching mechanism via a mouthpiece attached to the suction and discharge ports of the cylinders. , a cap that is rotatably attached to each of the two cylinder mouths and has a ratchet on the outer circumference, and a rotary lever that abuts the cap and is fixed to the swing tube so as to be extendable and retractable via a spring. It is equipped with an attached pin,
1. A suction switching device for a concrete pump, characterized in that the cap is rotated by a required pitch in one direction in conjunction with the switching operation of a swing tube by means of a pin in contact with a ratchet of the cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10507681U JPS589980U (en) | 1981-07-15 | 1981-07-15 | Suction switching device in concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10507681U JPS589980U (en) | 1981-07-15 | 1981-07-15 | Suction switching device in concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS589980U JPS589980U (en) | 1983-01-22 |
| JPS6146227Y2 true JPS6146227Y2 (en) | 1986-12-25 |
Family
ID=29899630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10507681U Granted JPS589980U (en) | 1981-07-15 | 1981-07-15 | Suction switching device in concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589980U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122478U (en) * | 1984-01-27 | 1985-08-17 | 文化シヤツタ−株式会社 | Overhead door - hanging wire rope loosening prevention device |
| JPH0221279U (en) * | 1988-07-26 | 1990-02-13 |
-
1981
- 1981-07-15 JP JP10507681U patent/JPS589980U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS589980U (en) | 1983-01-22 |
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